/* RatBrain · hero (petri dish + mascot) and origin strip */

.hero { position: relative; padding-top: calc(env(safe-area-inset-top, 0px) + 88px); min-height: clamp(700px, 100svh, 880px); display: flex; flex-direction: column; align-items: center; overflow: hidden; }
.hero-grid { position: absolute; inset: 0; pointer-events: none; opacity: .75;
  background-image: linear-gradient(var(--hair) 1px, transparent 1px), linear-gradient(90deg, var(--hair) 1px, transparent 1px), linear-gradient(rgba(33,26,58,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(33,26,58,.045) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px; background-position: center -1px;
  -webkit-mask-image: radial-gradient(70% 62% at 50% 44%, #000 20%, transparent 78%); mask-image: radial-gradient(70% 62% at 50% 44%, #000 20%, transparent 78%); }
.eyebrow { position: relative; margin: 0; font: 500 13px/1.4 var(--f-mono); letter-spacing: .04em; color: var(--ink-2); text-align: center; padding-inline: 16px; }
.wordmark { position: relative; z-index: 3; margin: 6px 0 0; font: 600 clamp(56px, 11vw, 144px)/.9 var(--f-display); letter-spacing: -.035em; text-align: center; white-space: nowrap; padding-inline: 12px; }
.w-rat { color: var(--ink); }
.w-brain { color: transparent; background-image: linear-gradient(100deg, transparent 42%, rgba(255,255,255,.9) 50%, transparent 58%), var(--holo-deep); background-size: 300% 100%, 200% 100%; background-position: 150% 0, 0 0; -webkit-background-clip: text; background-clip: text; animation: foil 12s linear infinite; filter: drop-shadow(0 10px 18px rgba(170,90,230,.22)); padding-right: .04em; }
@keyframes foil { 0% { background-position: 150% 0, 0% 0; } 30% { background-position: -60% 0, 60% 0; } 100% { background-position: -60% 0, 200% 0; } }

.hero-body { position: relative; width: 100%; max-width: 1280px; display: grid; grid-template-columns: minmax(0,1fr) min(548px, 46vw) minmax(0,1fr); align-items: center; padding-inline: var(--gutter); margin-top: -44px; flex: 1; }
.hero-copy { position: relative; z-index: 3; align-self: center; padding-top: 70px; min-width: 0; }
.hook { margin: 0; font: 700 clamp(26px, 2.5vw, 34px)/1.25 var(--f-display); letter-spacing: -.01em; }
.hook-en { margin: 8px 0 0; font: 400 13px/1.5 var(--f-mono); color: var(--muted); }
.sub { margin: 16px 0 0; max-width: 32ch; color: var(--ink-2); font-size: 15px; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.cta .btn-lg { padding: 0 20px; }
.hint { margin: 16px 0 0; font: 500 12px/1.4 var(--f-mono); color: var(--muted); display: flex; align-items: center; }
.hint .dropmark { width: 8px; height: 8px; margin-right: 8px; }

.stage { position: relative; z-index: 2; width: 100%; aspect-ratio: 1; justify-self: center; touch-action: manipulation; cursor: crosshair; -webkit-tap-highlight-color: transparent; }
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.tickring { position: absolute; left: 3%; top: 6.5%; width: 94%; height: 94%; overflow: visible; animation: spin 140s linear infinite; }
.tickring text { font: 500 2.1px var(--f-mono); fill: #6D6688; }
.mascot { position: absolute; inset: -2% -2% 0 -2%; pointer-events: none; }
.m-par { position: absolute; inset: 0; transform: translate3d(var(--mx, 0px), var(--my, 0px), 0); transition: transform .5s cubic-bezier(.2,.7,.2,1); }
.lay { position: absolute; inset: 0; width: 100%; height: 100%; user-select: none; -webkit-user-drag: none; }
.rider { position: absolute; inset: 0; animation: hover 2.6s ease-in-out infinite; transform-origin: 52% 88%; }
.ratwrap { position: absolute; inset: 0; transform-origin: 44% 50%; animation: pump 1.3s ease-in-out infinite; }
.ratwrap .shut { visibility: hidden; }
.ratwrap.blink .shut { visibility: visible; }
.ratwrap.blink .open { visibility: hidden; }
.speed { animation: zoom .5s ease-in-out infinite alternate; }
.dust { animation: puff 1.1s ease-in-out infinite; transform-origin: 24% 86%; }
.fx { animation: twinkle 2.8s ease-in-out infinite; }
.rider.cheer { animation: cheer .7s cubic-bezier(.3,1.6,.5,1); }
@keyframes hover { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-1.4%) rotate(-.8deg); } }
@keyframes pump { 0%, 100% { transform: scale(1, 1); } 50% { transform: scale(1.012, .982); } }
@keyframes zoom { from { transform: translateX(0); opacity: 1; } to { transform: translateX(-1.6%); opacity: .55; } }
@keyframes puff { 0%, 100% { transform: scale(1) translateX(0); opacity: 1; } 50% { transform: scale(1.06) translateX(-1%); opacity: .8; } }
@keyframes twinkle { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .55; transform: scale(.985); } }
@keyframes cheer { 0% { transform: translateY(0); } 40% { transform: translateY(-6%) rotate(-2deg); } 100% { transform: translateY(0); } }

.pipette { position: absolute; left: 0; top: 0; z-index: 4; width: clamp(26px, 3vw, 38px); aspect-ratio: 40 / 200; transform-origin: 50% 98.5%; transform: translate(var(--px, 80%), var(--py, 0px)) rotate(var(--pr, 14deg)); transition: transform 1.05s cubic-bezier(.45,.05,.25,1); pointer-events: none; filter: drop-shadow(0 12px 10px rgba(58,36,120,.2)); }
.pipette svg { width: 100%; height: 100%; display: block; }
.pipette .p-bulb { transform-box: fill-box; transform-origin: 50% 100%; transition: transform .14s ease; }
.pipette.squeeze .p-bulb { transform: scale(1.12, .74); }

.notes { position: relative; z-index: 3; display: grid; gap: 22px; padding-left: 26px; padding-top: 30px; justify-self: end; max-width: 250px; }
.note { position: relative; padding: 12px 14px 12px 16px; border-radius: 14px; background: rgba(255,255,255,.62); box-shadow: inset 0 0 0 1px rgba(255,255,255,.9), 0 0 0 1px rgba(33,26,58,.07), 0 16px 30px -22px rgba(58,36,120,.4); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.note::before { content: ""; position: absolute; left: -4px; top: 50%; width: 8px; height: 8px; border-radius: 50%; transform: translateY(-50%); background: #fff; box-shadow: 0 0 0 1.5px var(--ink); }
.note b { display: block; font: 600 14px/1.3 var(--f-display); }
.note span { display: block; margin-top: 3px; font-size: 12.5px; line-height: 1.5; color: var(--muted); }
.note span.mono { font-size: 13px; color: var(--ink-2); }
.concept { margin: 0; font: 400 11px/1.4 var(--f-mono); color: var(--faint); padding-left: 2px; }
.leaders { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 3; overflow: visible; }
.leaders path { fill: none; stroke: var(--ink); stroke-opacity: .42; stroke-width: 1; stroke-dasharray: 3 4; animation: march 1.6s linear infinite; }
.leaders .tgt { fill: #fff; stroke: var(--ink); stroke-width: 1.3; }
.leaders .pulse { fill: none; stroke: #B69CFF; stroke-width: 1.4; transform-box: fill-box; transform-origin: center; animation: pulse 2.2s ease-out infinite; }
@keyframes march { to { stroke-dashoffset: -14; } }
@keyframes pulse { 0% { transform: scale(.6); opacity: .9; } 100% { transform: scale(3.2); opacity: 0; } }

/* runway (rat runs across a ruler bench) */
.runway { position: relative; width: 100%; height: 64px; overflow: hidden; pointer-events: none; }
.bench { position: absolute; left: 0; right: 0; bottom: 14px; height: 12px;
  background: linear-gradient(var(--hair-2), var(--hair-2)) 0 0 / 100% 1px no-repeat, repeating-linear-gradient(90deg, rgba(33,26,58,.28) 0 1px, transparent 1px 10px) 0 1px / 100% 5px no-repeat, repeating-linear-gradient(90deg, rgba(33,26,58,.35) 0 1px, transparent 1px 100px) 0 1px / 100% 11px no-repeat;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.runner { position: absolute; left: 0; bottom: 10px; width: 78px; height: 78px; transform: translateX(-120px); }
.runner img { width: 100%; height: 100%; }
.runner.go img { animation: hop .3s ease-in-out infinite alternate; }
@keyframes hop { from { transform: translateY(0) rotate(-2deg); } to { transform: translateY(-9px) rotate(3deg); } }
.hero .runway { position: absolute; left: 0; bottom: 0; }
.runway-mid { margin-top: clamp(30px, 5vw, 60px); }

/* origin strip */
.origin { position: relative; margin: 18px 0 0; padding: 18px 20px; border-radius: 20px; background: rgba(255,255,255,.55); box-shadow: inset 0 0 0 1px rgba(255,255,255,.9), 0 0 0 1px rgba(33,26,58,.06); display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 12px 26px; align-items: start; }
.origin-k { margin: 2px 0 0; font-size: 12px; color: var(--violet); white-space: nowrap; }
.origin-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 26px; }
.origin-list li { position: relative; padding-left: 16px; min-width: 0; }
.origin-list li::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 2px; border-radius: 2px; background: var(--holo); opacity: .8; }
.o-yr { display: block; font-size: 12px; font-weight: 600; color: var(--ink); }
.origin-list p { margin: 4px 0 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.6; }

@media (max-width: 1180px) {
  .hero-body { grid-template-columns: minmax(0, 1fr) min(560px, 56vw); }
  .notes, .leaders { display: none; }
  .hero-copy { padding-top: 40px; }
}
@media (max-width: 980px) {
  .origin { grid-template-columns: minmax(0, 1fr); }
  .origin-list { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 860px) {
  .hero { min-height: 0; padding-bottom: 60px; }
  .hero-body { grid-template-columns: minmax(0, 1fr); margin-top: 4px; }
  .stage { width: min(560px, 100%); order: 1; }
  .hero-copy { order: 2; padding-top: 18px; text-align: center; display: flex; flex-direction: column; align-items: center; }
  .hint { justify-content: center; }
  .sub { margin-inline: auto; }
  .cta { justify-content: center; }
}
@media (max-width: 640px) {
  .eyebrow { font-size: 11.5px; }
  .hero { padding-top: calc(env(safe-area-inset-top, 0px) + 80px); }
  .wordmark { margin-top: 8px; font-size: clamp(50px, 15.2vw, 90px); }
  .stage { width: calc(100% + 16px); margin-inline: -8px; margin-top: -18px; }
  .hook { font-size: 26px; }
  .sub { font-size: 14.5px; }
  .cta { width: 100%; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .cta .btn { width: 100%; padding: 0 10px; font-size: 15px; }
}
@media (max-width: 370px) {
  .cta { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  .tickring { animation: none !important; }
  .runway .runner { display: none; }
}